/*
 * Copyright (C) 2008 Search Solution Corporation. All rights reserved by Search Solution. 
 *
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met: 
 *
 * - Redistributions of source code must retain the above copyright notice, 
 *   this list of conditions and the following disclaimer. 
 *
 * - Redistributions in binary form must reproduce the above copyright notice, 
 *   this list of conditions and the following disclaimer in the documentation 
 *   and/or other materials provided with the distribution. 
 *
 * - Neither the name of the <ORGANIZATION> nor the names of its contributors 
 *   may be used to endorse or promote products derived from this software without 
 *   specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
 * IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
 * OF SUCH DAMAGE. 
 *
 */

package cubrid.jdbc.driver;

import javax.transaction.xa.Xid;
import java.util.*;

abstract class CUBRIDXidTable
{
  private static Hashtable xaTable;

  static
  {
    xaTable = new Hashtable();
  }

  static boolean putXidInfo(String key, CUBRIDXidInfo xidInfo)
  {
    Vector xidArray;

    synchronized (xaTable)
    {
      xidArray = (Vector) xaTable.get(key);

      if (xidArray == null)
      {
        xidArray = new Vector();
        xaTable.put(key, xidArray);
      }
    }

    synchronized (xidArray)
    {
      for (int i = 0; i < xidArray.size(); i++)
      {
        if (xidInfo.compare((CUBRIDXidInfo) xidArray.get(i)))
          return false;
      }
      xidArray.add(xidInfo);
    }
    return true;
  }

  static CUBRIDXidInfo getXid(String key, Xid xid)
  {
    Vector xidArray;

    synchronized (xaTable)
    {
      xidArray = (Vector) xaTable.get(key);
      if (xidArray == null)
        return null;
    }

    synchronized (xidArray)
    {
      CUBRIDXidInfo xidInfo;
      for (int i = 0; i < xidArray.size(); i++)
      {
        xidInfo = (CUBRIDXidInfo) xidArray.get(i);
        if (xidInfo.compare(xid))
          return xidInfo;
      }
    }

    return null;
  }

  static void removeXid(String key, Xid xid)
  {
    Vector xidArray;

    synchronized (xaTable)
    {
      xidArray = (Vector) xaTable.get(key);
      if (xidArray == null)
        return;
    }

    synchronized (xidArray)
    {
      CUBRIDXidInfo xidInfo;
      for (int i = 0; i < xidArray.size(); i++)
      {
        xidInfo = (CUBRIDXidInfo) xidArray.get(i);
        if (xidInfo.compare(xid))
        {
          xidArray.remove(i);
          return;
        }
      }
    }
  }
}
